The duty of the gunner, armourer,
and gunsmith on board a man of
372
Parts of cannon defined,
Parts of a carriage defined,
To find whether a cannon be taper
bored,
376
To find flaws and cracks in a piece of
ordnance,
377
To find if a piece of ordnance be ho-
neycomed,
To find how much powder is sufficient
for any piece of ordnance either
true or taper bored,
ib.
How to know the thickness of metal
at the touch holes, and at the trun-
nions and muzzle,